Netherlands. There is also a small P surplus and a relatively large N surplus, given the environmental requirements. Nitrates Directive derogation appears to have a limited effect on the C, N and P input, reducing the gap between the current and desired N input, but increasing it slightly for P. With the use of mineral concentrates derived from animal manure, however, it appears that the gap between the current and desired N-input can almost be halved. Use of mineral concentrates offers opportunities to better close the regional mineral balance, but cannot yet compete with the efficiency of artificial fertilizer. Reprocessing to convenient and high-active products (with an effect comparable to artificial fertilizer) offers potential for both domestic and foreign markets.
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